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(No Model.) 6 Sheets-Sheet 2. F. LURMANN. APPARATUS FOR THE CONTINUOUS DISTILLATION, SUBLIMATION, OR ROASTING OI SOLID MATERIALS.

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F. LURMANN. APPARATUS FOR THE CONTINUOUS DISTILLATION, SUBLIMATION, OR

ROASTING 0F SOLID MATERIALS. 29 w Patented J xxx/ 2 79 9/11 llllml l I 6%////////////////////%% WWIIIII/II/A/ (No Model.) 6 Sheets-Sheet 5.

F. LURMANN.

APPARATUS FOR THE CONTINUOUS DISTILLATION, SUBLIMATION, 0R ROASTING 0P SOLIDMATERIALS.

N0. 279,099. Patented June 5,1883.

N. PETERS. Fhoiohlhcgnphur. Washingon, D. 6.

UN l'TED STATES PATENT @FEIGE.

NFRITZLURYMANN, or OSNABRUCK, GERMANY.

APPARATUS FOR THE CONTINUOUS DISTILLATION, S UBLIMATION, R ROASTING 0F SOLID MATERIALS.

Application tiled February 23, 1881.

srncrrrcnrron forming part of"Letters; Patent No. 279,099, dated June 5, 1883:

(No model.) Patented in Germany June 8, 1880, No. 13,021, and June 26, 1880, No. 12,432; in

Belgium August 31. 1880. No. 52,353 in France August 31, 1880 No. 138.504; in Austria-Hungary November 22, 1880, No. 26,597 andNo. 35.757; in Lnxemburg January 25, 1851, No. 112. and in England April 20, 1881. No. 4,098. I

' June 26; A. D. 1880, No. 12,432, of which the following is a specification.

This invention relates to improvements in apparatus for the continuous distillation, sub

litnation, or roasting of solid materials-.such

as coal,'woo d, ores, earths, and'the like-and the objects of my improvements are to effect such distillation, sublimation, or roasting with rapidity and efficiency, and with safety to the oven, and to utilize as fuel the gases resulting from the treatment of the materials in the oven.

With these ends in view the invention consists in an oven having certain novel features of construction, which willbe hereinafter. fully described with reference to the accompanying drawings, in which-' f Figure 1 is a vertical section of a coke-oven constructed according to my invention, the

.; section being taken; through the longitudinal center of one of the distilling-chambers, with any number of which the oven may be provided. Fig. 2 is a horizontal and oblique sec tion' of an oven having dicated'by. the line so Fig. 1. Fig. 3 is a horizontal section taken in the planes indicated by the line y y of Fig. 1. Fig. 4 is 'a hori- .zont al section on the line z zpf 'Fig. 1. .Fig.

5 is a vertical section on the line a." at of Fig. 1. Fig. 6 is a horizontal section on line 00" as" of Fig. 1. Fig. 7 is a vertical section on line as as? of Fig. 1. Fig. 8 is a vertical'section of a modified form of the oven. Fig. 9 is a horizontal section of a single oven on line 00 w of Fig. 8.

" 10 is a horizontal section of the same on E10. hiie ii of Fig. 8. Fig. 11 'is a horizontal section of the same 011 line as no of Fig. 8. Fig.

12 is a horizontal. section on line 50 a? of Fig.5 8. Fig. 13 is a vertical section of another-modification of the oven. Fig. 14 is a rear view of thesam e Fig. 15is a-horizontal section of the same on line 00 m of Fig. 13; Fig. 16, a view three distilling-chamhers, said section being taken in the planes inin perspective of so much of. the furnace as 50 shows the inclined floor-wall of the distilling chamber and its transverse supporting-pillars of unequal thickness. Fig. 17 is a plan view of the horizontal register, with its atertube shown in dotted lines. v view of the register-seat, and also a cross-section of the register and seat. Fig. 19 is a vertical central section of the horizontal register and its seat. Fig. 20 is a vertical section of the vertical register and its guide-frames. Fig. 60

,21 is a horizontal central sect-ion of the same. Fig. 22 is a view in elevation ofone ot' the guide-frames of the vertical register and Fig.

23 a vertical section showing the fines surrounding chamber A. 24 is a horizontal 6 5 section taken through the top fire-chambers above the fines. Fig. 25 is a vertical section of the same, taken on the dotted line :1 0c of Fig. 24. Fig. 26 is a vertical section taken on the line 90 m of Fig. 2i. Fig. 27 is a viewin '70 perspective of so much of the furnace as shows the inclinedfloor andvertical wall-fines and braces. Fig. 28is a vertical section, showing the distilling or working ovens arranged at difterent'levels. Fig. 29 represents a crosssection taken-through the dotted line .00 0c and 00" av. of Fig. 28. Fig. 30 represents a horizontal section taken on the dotted line a? x of Fig. 29.,

In this construction the gaseous products of distillation are collected in the eoolingchamber B.

, The letter A, wherever it appears, indicates a distilling or treating chamber of the oven,

and the various flues are designated by nu 85 merals. The coolingchambers, into which the coke is discharged from the distilling-chambers, are marked with the letter B, and the charging apparatus, which forces the coal into the distillingchambers, is shown at C.

An important and advantageousfeature of the distillingchainber constructed according to my invention consists in its very thin' but thoroughly-braced walls of small-sized firebricks. The object in making these walls thin 5 is that the heat from the products of combustion circulating in the adjacent flues may pass freely through them. The coal being heated in Fig. 18 is a'similar 7 portion terminating at and joining with the the distillirig-chambers, and, being thin, these walls .must be thoroughly braced from the outside in order to prevent them from being broken or crushed by the great pressure of the coal and coke which are forced through the chambers by the charging apparatus.

The wall-bricks of the distilling-chambers are indicated by the letter a, said bricks being of small size. Quite a number, placed edge to edge, is required to form each wall. The bricks of the fiooravall are supported by pillarwalls 6, having the thickness of only a single brick at the top, andextend across the door, as shown, these pillar-walls resting at their bottoms on suitable masonry, on, and separated by intervening spaces torming fines, which will be presently referred tol The distillingchamber is gradually enlarged from its charging to its discharging end by giving the floorwalls a downward and inward inclination, as shown in Figs. 1 and 16, and the pillar-walls therefore decrease in height toward the discharging end ofthc chamber. Thefiues formed between the pillar-walls (see Figs. 1, '8, 13, and 16) extend entirely across the lower surface of the tloorwall. The object in thus gradually enlarging the treating-chamber is toprevent the choking up of the same by the solid materials forced into the same under great pressure.

The side walls of the distilling-chamber are braced by thin *alls 0, (see Fig. 3,) separated by intervening spaces forming vertical fines. These walls 0 have their edges opposite the chamber abutted against suitable supporting walls or partitions, (I, of masonry.

The roof-wall of the distilling-chamber is composed of two rows of arched bricks, as shown, meeting above the longitudinal center of the floor, and resting upon the side walls.

Along the longitudinal center of the top surface of the roof-wall runs a partitiorrwall, 0, (see Fig. 6,) extending from the rear wall, f, of the oven toward the front for about two-thirds the length of the chamber, and is then in clined to one side, as shown at e, the inclined upper portion of the last side bracing-wall, 0, toward the front. The ends of the distillingchamber are supported in the front and rear vertical walls of that portion of the oven in which they are situated, said walls being provided with suitable ledges, m, Fig. 16, supporting the ends of the end bricks of the chainber-walls. v

Under the masonry m, upon which the pillar-walls I) rest, are formed fines 28 29 30, Figs. 2 and 15, the said fine 2S communicating through openings 31 31, Figs. 4 and 13, in its roofwal l, with thefirst two horizontal fines, 32-33,'which are separated bythe first hori zontal pillar-wall, b, and-these two horizontal fines 32 and 33 are in communication with the first two vertical fines, 34. 35, Fig. 6, which are separated by the first side bracing-wall, 0, near the discharging end of the chamber and at one side thereof. These fines 34 and 35 connect the bracing-walls 0 on that side of the chamher, and these vertical fines 36 are in communication at their bottoms with. the horizontal fines 37, Figs. 1, 4, and 13, which at their o p posite ends are in communication with the verti :al fines 38, Figs. 3 and 6, which at their tops are in communication with the cham berE, calledthe accnmnlation-chamber," 011 the opposite side of the partition e e from the fire-chamber. At its front end the accumnlat ing-chamber E is in communication with the vertical fiue 39, Figs. 3, 6, 13, which is between the front wall of the oven and the first adjacent side bracing'wall, a, on that side of the distillingchamber. At its lower endthis flue 39 communicates with a horizontal fine, 40, Figs. 1, 7, 8, 13, which is under the front end of the distilling-chamber, and between, the first wall of the oven and the first adjacent pillarwall b. This fine 40 is closed by a transverse wall, 9, Fig. 7, but is in comnmnication with an exit-fine, 41, Fig. 1, which leads down through the masonry to a general exit-fine, 42, Fig. 1., which is common to the exit-fiues 41, leading from the circulating-fines of all the distilling chambers in the oven. This general exit-fine 42 leads to a smoke-stack, 43. (See Fig. 3.)

The fiuesiZS, Fig. 2, communicate with transverse fiues 27 into whiehlead the oblique fines 26, Figs. 1 and 2, which at their opposite lower ends open into a transverse fine, 25, which is in communication with the induction-flue 24, which communicates with the external air through the register h when the same is open, and by means of which the quantity of air entering the induction-fine may be regulated.

Through the roofwall of the distillingchamber, near its large end, is formed a passage, 44, Figs. and 6, through which the gas passes from the distilling-chamber to the firechamber D to meet. the air entering through the air fines 34 and 35 to produce combustion.

The distilling-chambers open at their discharging ends into cooling chambers B, of which there maybe one for each distilling chamber; or all of said distilling-chambers in an oven may open into a common coolingchamber. The cooling-chamber has the lower portion of its inner wall inclined, as shown at f, to throw the coke forward toward the drawing-doors G as it falls from the distilling-chain bers.

It is under the cooling-chamber B that the air-fines 24 25 26 are arranged, in order that the air passing in through said fines may as sist in cooling the walls of said chamber, and at the same time become heated, in order to facilitate combustion when it meets the hot gases in the fire-chamber D.

I-have not shown the furnace for, heating the oven, as it may be constructed in any known and convenient manner, and have its iiue, in connection with the general exit-fine process ofdistillatiou, which maybe continued 42, connecting with the smoke-stack 43, Fig. 3. Each of the cooling-chambers may have one or more openings at its top, as indicated in dotted lines at f, Fig. 1, to permit the escape of gas which has not passed to the fire-chamher; or when the gas is not to be burned, the opening in the roof of the distilling-chamber will be closed, and the openings f maybe connected with suitable apparatus for saving and purifying the gas. a

The operation of the oven, as described,

when using the gas as fuel, is as follows: The

oven is first heated up by the furnace, and the coal to be treated is fedinto the funnel H, and

thence passes into the charging end of the disfilling-chamber, and is pressed forward into said chamber by the charging apparatus G, which may be of any known construction. As the coal is forced slowly through the heated distilling-chamber and formed into coke the greater portion of the gas given off passes through the opening .4, Fig. 5, highly heated, to the fire-chamber .l), in which it meets the air, which, entering through the register h "traverses the fines 2a 25 26 under the cooljug-chamber, becoming heated by the waste heat, which the cooling coke in said cham' ber communicates to the walls, and thence passing through the flue 27 to flue 28, Fig. 5, rises through the openings 31 to the horizontal fines 32 33, Figs. 4 and 5, and traversing the same enters the two vertical fines 34 35,

Figs. 3 and 6, passing through which it enters the fire-chamber I), and there, having become highly heated in its passage through the various fines, it meets and mixes with the hot-gas and combustion ensues. The heated products of this combustion pass downward through the fines 36, Figs. 3 and 6, in contact with the adjacent side wall of the distilling-chamber, and pass into and traverse the horizontal flues'37, Figs. 4, 1, =3, 13, between the pillarwvalls b, heating the bottom of the dist-iHing-chamber by their cont-act, and leaving these fluespass up through the fines 38 to the accumulatingchambergE, and after traversing said chamber the heated products of combustion of the gas pass downward through fine 39 to -thc horizontal flue 40, and thence through the register I to the exit-fine 41, and from the said'fine to the general exit-fine 42, which leads them to the smoke'stack 43, or to any apparatus in I which this heat is desired to be further utilized.

It will be observed, from the arrangement of the fines through which the heated products of combustion pass in contact with the thin walls of the distilling-chamber, that a very large amount of heat will be communicated to the contents of the distilling-chamber, causing a rapid conversion of the coal into coke, which is gradually discharged into'the cooling-chamher as fresh coal is driven into the distillingchamber by the charging apparatus. The coke may be removed from the cooling-chamber through the doors G without interrupting the 50, rises thence ,through the vertical fines 5.1.to transverse fines 52, leading into a fine, 53,

which takes the. place of the fine 28 in the form of oven first described, and communicates with the fines above in a similar manner. Between the rows of vertical fines 51 are arranged a number of general exit-fines, 5-1:, which are connected by slits 55, Fig. '10, formed through their separating-walls, the first of general exit-fines toward the front being connected with the exitfine 41, the same asin the first-described form of oven. In this modification it will be seen that the heated pro ducts of combustion pass off through fines, wit-h the walls of which the incoming air passes in contact, and thereby becomes thoroughly heated.

In the modification shown in Figs. 13, 1.4, 15 the separate cooling-chamber is dispensed with and the ,distillirig-chamber provided with a door, It, at its discharging end, through which the coke may be discharged into awagonor other receptacle. In this modification the fines 28 29' 30, Fig. 15, correspond to the fines 29 29 30 of the first-described form of oven, the fine 28' being extended through the rear wall of the oven and provided at its outer end with a register, h, for the admission of air;

fold or returnbend tube with the end projecting, so that one end may be connected with a suitable water-inlet pipe and the other to adischarge-pipe. I am thus enabled to maintain circulation of water through the body of the register to keep it below a destructive temperature. I also embed a tube in the seat or guide of each register in the same manner.

In Fig. 17, I is thehorizontal register which controls-the entrance to the exit-fiue 41, as shown in Fig. 1, and I, Fig. 18, is the open sea-t upon which said register slides. The register and its slide are made of cast-iron, and in the process of casting a wrought-iron manifold or return-bend tube, '1', (shown mainly in dotted lines,) is embedded in the body of the register with its ends projecting, as shown at 17 1 Either one of the projecting ends may be connected to a water-supply and the other to a discharge-pipe In the cast-iron register-seat 1 a forged-iron pipe, 1 is embedded in a similarmanner, with its ends projecting for the same purpose.

The verticalregister h, which guards the en- I The air enters through the bottom flue, 49, and, passing into transverse finesv 4 eraoee trance to the induction air-line 24, is of the thin walls of fire-brick of the oven, supported same form and construction as the horizontal register. This vertical register slides between two open guide-frames, such as shown at I, Fig. 22. Two of these guide-frames are placed together, as shown in Figs. 20 and 21, with a guideway and grooves formed in them for the register I). The water-tubes embedded in the guides are shown in, dotted lines in Fig. 22.

The roastingchamber is always filled, and

the operation is continuous, the ch arging bein continuous or intermittent, giving density and firmness to the body of the material under treatment, and gradually moving it forward in a perpetually-p acked condition, which permits ot' the making of very dense and firm coke.

The chambers may be arranged side by side, or at various levels, and their shape and dimensions must be suited to the material to be treated; but of whatever form, the walls must be thin. to allow. the heat to rapidily pass through them, and it is an important matter that they should be supported and braced, so as to withstand the high pressure produced by the packed condition, swelling, and movement of the materials being coked. For this-purpose the top wall, (I, the thin side walls, 0, and the bottom pillars, I), are arranged to support the bricks of the chamber-walls at theirioints against interior pressure, and at the same time form the circulating-fines.

It is importantthat the bottom flare down-, ward from the charging apparatus, and that the walls be very hot to prevent the coalsi'rom adhering to them, as well as to repel them. Otherwise the moving of the material by the mechanical feed would require such an enormous power as to render the oven practically useless for continuous operation. The thin walls must therefore be supported at right angles from without in order to resist the great pressure from within, as shown in the detail, Fig. 24, Sheet l t is also important that these supporting-walls should be as thin as possible, and for this purpose the illars. are reduced in thickness where the floor rests up on them, the distance between the pillars from middle to middle being equal. to the length of the brick used in the floor ot' the coking-chamber.

The heating of the coals commences in the front part of the chamber A, while the coals are advanced gradually and regularly and the coking continues without intermission. This end of the coking-chamber, where the cold and damp coals enter, is particularly well heated by the hot gases descending from theaccumulating-chamber through the front flue, 39, Fig.

6, around the thin walls of the sides and bottom, as in Fig. 7.

The quantity of gas developed from the packed condition of the coals, the quantity of air necessary for combustion and for the draft, are maintained without change, and the working is consequently continuous under a high and regular temperature, the heat being quickly transferred to the coals through the against the pressure of the coals along the verti cal sides, along its top, and across the under side of the floor at the joints formed by each row of bricks. \Vere it not for this bracing and support the thin i 'alls of brick and a mechanical feed could not be used. The top chamberdividing wall, 0, forms an outside support for the top thin wall of the workingchamber.

Th e coking operation can be watched through the wall-openings 11 and the registers adjusted to regulate the draft to suit the mat-c rial.

In removing the solid products from the cooling-chamber through. the door the air is prevented from entering therein by reason ol" the pressure of in the entire oven, espe eially in the cooling-chamber, its top opening being then closed, and the coking is not therefore interrupted.

Two fire-chambers may be arranged over the coking-oven, as shown in Figs. 2st, 25, and 26, Sheet 5. In this arrangement the gas enters through openings 44: at the rear end of the coking-chamber, and circulates through the tines 36 around said chamber, the gases passing out through the openings 37, which are arranged in the pillars under the furnace, and thence through the sliding register 71 into the fine 41, thus equalizing the heat around the chamber, while the air enters the two lire-chambers in the same quantities through the openings Set 35, Fig. 25, producing a thoroughmixing and complete combustion, with a more simple arof the oven, and I do not claim such an oven,

broadly. I am also aware that in furnaces and ovens valves an d valve-seats have been formed of cast-iron with water-tubes embedded therein, and make no claim to such valves or their seats.

I have described the oven being partied la-rly adapted for the production of coke in which the resulting gases are utilized as fuel for heating the oven in the continuous opera tion thereof, and I have also stated that when it is not desired to thus utilize the gas as fuel it may be collected in the cooling-chamber and drawn therefrom for purification and for use. I have also stated that the distilling-chambers may be arranged at various levels, or side by side, and I have shown in Figs. 28,- 29, and 30 the ovens arranged at various levels and adapted to save the volatile or gaseous pro-. ducts of distillation in the cooling-chamber.

In the oven thus constructed there. is no out let for the in the roof of the distillingeral openings, f, in the top orfin' the'side, it is withdrawn into suitable apparatus for saving and purifying it. Otherwise the oven is same as that described for cokin The construction shown in these figures embraces eight 5 ovens arranged at different levels. Their shape, length, breadth, and height must be suited to the purpose for which they are intended and the material which is to be distilled. The openings f are provided with suitable water-cooled registers adapted to withstand the heat. The solid products of distillationiall into the bottom of said cooling-chamber, from whence they are removed only when the gas registers are closed, and pressure thereby prodnced in the entire apparatus, and especially within the cooling chamber. Against this pressure the air cannot enter the co oling-chamber when its doors are opened to remove the solid products, and the operation of the subliin feeding the material to the oven, withdraw mg the gas, or in withdrawing the material from the chamber within which the gas collects.

By this continuous distillation the gas is produced from an oven charged under a continuous pressure by a continuous feed, discharging both the gas and the solid products regularly into a cooling-chamber closed against the entrance of air, from which the gas is withdrawn, and from which the solid products of combustion are withdrawn under a pressure in the coolingchamber, )rodueed by closing the outlets for the gas, whereby air is prevented from entering said chamber through the doors by which 5 the solid products are discharged, and thereby maintain the continuous operation of the oven under a uniform heat and a uniform continuous feed of the material to be treated.

It will be understood that in this process the ovens will be heated in any suitable manner.

I claim 1. In a distilling -'kiln or coking furnace, the working-oven constructed with a horizontal top and a downwardly-inclined floor, a, in combination with a closed chamber, B, having oneor more discharge-doors, G, in its rear wall, and having a downwardly-flaring bottom, f, substantially as described, for the purpose specified.

2. A distilling-kiln or coking-oven having the cold-air-induction fines 24 25 26, the top lire-chamber, D, and the top chamber, E, for hot air, communicating with said air-indueti on fines, the oven A, communinating with said 5 fire-chamber, and the chamber B, having its floor arranged adjacent to the cold-air-induetion fines, whereby the walls of the latter will be heated by the waste heat of material cooling in said chamber B, substantially as described, for the purpose specified.

3. In a distilling-kiln or coking-oven, the working-oven A, having its bottom, side, and top walls formed of thin fire-brick placed fiatwise in the walls, braced or supported at 5 their joints all round the oven by right-angled walls, which also form fines bounded in one mation or distillation is not interrupted, either direction by the thin walls of the oven floor and sides, and the top chambers, in combination, with a charging apparatus arranged to force solid materials through said oven, substantially as described.

4. In a distilling-kiln or coking-oven, the working-oven A, having the top opening, 44, the firechamber D, communicating therewith, the fines 32, 33, 34, and 35, the accumulatingchamber E, and the exitfiues 39, 4.0, and 41, connected therewith, substantially as described.

5. In an oven for the purpose described, the treating-chamber A, having its walls formed of numerous small and thin fire-brick braced at the sides by the vertical. heatingflue walls 0, and supported at the bottom by the pillar-walls I), separated by heating-fines and braced at the top against interior pressure by the wall c c, substantially as described, for

the purpose specified.

6. The even herein described, consisting of the horizontal treating-chamber A, having a downwardly-in elined bottom, the vertical cool ing-chamber B, a charging apparatus, 0, the top combustion-chamber, D, communicating with said treating chamber, the accumulating chamber E, exit-fines connected therewith, and sliding water-cooled registers, all constructed and adapted for continuous operation, substantially as described.

7. The combination, in a coking-oven, of a roasting-chamber, A, having its walls formed of small, thin fire-brick, with one or more fire chambers, D, arranged above the roastingchamber, communicating with it by a crownopening, 44, therein, and with induction air and heating ilnes, and having a length nearly equalto that of said roasting-chamber, substantially as described, for the purpose specified.

8. The combination of the workingchamber A, having its walls formed of thin fire-brick in single rows, with a top chamber divided by a longitudinal. wall,,e, forming a gas and air receiving chamber, 1), and a heat-acenmulat ing chamber, 15, and the descending-flue39 at the side of the front end of said working-chain ber, whereby the hot gases pass down and around the charging end of the working-chamber to heat the coal at the charging-point.

'9. In combination, in a coking-furnace, the

, FRITZ LUBMANX.

Vitnesses:

WILn. Bnaunn,

AUG. SCHULTZ. 

